222613161 has 4 divisors (see below), whose sum is σ = 296817552. Its totient is φ = 148408772.

The previous prime is 222613133. The next prime is 222613163. The reversal of 222613161 is 161316222.

222613161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 222613161 - 2⁷ = 222613033 is a prime.

It is not an unprimeable number, because it can be changed into a prime (222613163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37102191 + ... + 37102196.

It is an arithmetic number, because the mean of its divisors is an integer number (74204388).

Almost surely, 2^222613161 is an apocalyptic number.

It is an amenable number.

222613161 is a deficient number, since it is larger than the sum of its proper divisors (74204391).

222613161 is an equidigital number, since it uses as much as digits as its factorization.

222613161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74204390.

The product of its digits is 864, while the sum is 24.

The square root of 222613161 is about 14920.2265733467. The cubic root of 222613161 is about 606.0618476454.

Adding to 222613161 its reverse (161316222), we get a palindrome (383929383).

The spelling of 222613161 in words is "two hundred twenty-two million, six hundred thirteen thousand, one hundred sixty-one".